Obt Knife Guard Rice Harvester Combine Spare Parts

• Type: Clay Dry Sand
• Casting Method: Resin Sand Casting
• Sand Core Type: Resin Sand Core
• Application: Agricultural Machinery Parts
• Machining: CNC Machining
• Material: Iron
• Surface Treatment: Sand Blast
• Surface Roughness: Ra0.1
• Standard: ASTM
• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• Transport Package: Wooden Box Packing
• Specification: ASTM A536 / QT450-10
• Trademark: OBT
• Origin: China
• HS Code: 8486909000
• Production Capacity: 100000

Product Description

Product Description

Specification

Product Name	Metal Foundry Steel Gray / Grey / Ductile Cast Iron Aluminum Sand Iron Casting
Quality Assurance	ISO9001:2015 Certified
Material	Aluminum Alloy:5052 /6061/ 6063 / 2017 / 7075 / etc.
	Brass Alloy:3600/ 3602 / 2604 / H59 / H62 / etc
	Stainless Steel Alloy:303 / 304 / 316 / 412 / etc.
	Steel Alloy:Carbon Steel / Die Steel / etc.
	Titanium Alloy: Grade 1/Grade 2/Grade 2 H/Grade 3/Grade 5/etc
	We handle many other type of materials. Please contact us if your required material is not listed above.
Surface Treatment	Blacking,polishing,anodize,chrome plating,zinc plating,nickel plating,tinting
File Formats	Solid Works,Pro/Engineer, AutoCAD(DXF,DWG), PDF,TIF etc
Machining Equipment	Machining Center / CNC Lathes / Grinding Machines / Milling Machines / Lathes / Stamping Machines/ Full Automatic Lathe /etc.

Company Profile

 

Over ten years development, our products are sold in Germany, the United States, Australia, Britain, the Middle East, Spain, Brazil, India, South Korea, Taiwan and Chinese mainland, etc. We will sincerely create and share success with all clients. Our goal is not only to provide high quality products, but also to maintain a personalized and professional relationship with each customer. If you are interested in any of our products, please do not hesitate to contact us directly with your questions or inquiries.

FAQ

1. How to prevent the formation of air holes in castings?
The effective methods to prevent bubbles are: reducing the gas content in the metal liquid, increasing the air permeability of sand mold, and adding an air riser at the top of the mold cavity.

2. How to avoid the situation of sticky sand?
The surface of the casting is adhered to a layer of sand which is difficult to remove.It not only affects the appearance of
casting, but also increases the workload of casting cleaning and cutting, and even affects the life of the machine.The method to prevent the formation of sand is to add coal powder in molding sand, and to brush the surface of the cast mold with anti-sand paint.

3. How to identify shrinkage?

(1) Observe the surface shape of casting defects. If the surface is uneven, very rough, and dark gray, the hole with irregular
shape is shrinkage cavity.
(2) If the location of the hole is at the final solidification thickening of the casting, or at the hot spot where the two walls
intersect, and is located in the middle or upper part of the section, it is a shrinkage cavity.
(3) The most concentrated hole defects on the thick and large section of steel castings are shrinkage or air shrinkage.

4. How to prevent sand expansion?

In order to prevent sand expansion, the strength of sand mold and the rigidity of sand box should be increased, and the pressing force or fastening force when closing the box should be increased. In addition, the pouring temperature should be reduced to make the surface of molten metal crust earlier, so as to reduce the pressure of molten metal on the mold.

5. How to prevent sand inclusion?

Sand inclusion is a kind of groove and scar defect formed on the surface of castings, which is very easy to produce in wet mold casting of heavy plate castings. Avoiding large plane structure can effectively prevent sand inclusion.

6. How to identify the wrong type, wrong core and off-core?

(1) Dislocation is the defect that one part of the casting is staggered with another part at the parting surface, which is usually caused by inaccurate positioning of the mold.
(2) The core staggering is that the sand cores are staggered at the parting surface, which makes the inner cavity of the casting deform and the outer surface shape of the casting is correct.
(3) Core deviation is caused by improper change of sand core position, which results in casting shape and size inconsistent with the drawing.

Packing&Details

 

To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.